Malicious PDF — malware analysis report

Static analysis result for SHA-256 14eee8767d53541c…

MALICIOUS

PDF

88.5 KB Created: 2021-07-26 01:02:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 044189663cc7e5e336421c9b4dbc85ac SHA-1: b28bccfc80018d534ef801af98e6893aae91c515 SHA-256: 14eee8767d53541c3555b924cf933196eae291592c0b1fbae453c1ca02773d91
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document contains a link farm pointing to multiple compromised websites, likely intended to trick users into downloading further malware. The presence of embedded URLs and the nature of the heuristics suggest a phishing attempt, possibly delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://asianmosaicnyc.com/userfiles/file/fitiz.pdf In PDF document text
    • https://www.erenang.com/wp-content/plugins/formcraft/file-upload/server/content/files/160861e7e33c3c---52118142569.pdfIn PDF document text
    • http://hpmcfamilyreunion1968.com/clients/83891/File/kamoxejixasotekepoxopot.pdfIn PDF document text
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/3af8032d126a4a00ed18d2c78c04b3e4/11930858662.pdfIn PDF document text
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2e25d9798---23165767168.pdfIn PDF document text
    • http://clinicaveterinariacene.com/userfiles/files/73110187660.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/hhe81mflplful8vu0qs0fdaqml/95500832198.pdfIn PDF document text
    • http://roycraft.ca/userfiles/file/rekusisejobuza.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/812684cd3f1cf1c0594810c9e7517830/49067140781.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/psnt7hhs4mlrbao8gd614sfsub/124081727.pdfIn PDF document text
    • http://firegallery.ru/img/upload/19737962054.pdfIn PDF document text
    • http://archinfo.ru/uploads/file/xanukezez.pdfIn PDF document text
    • http://versobrokers.eu/userfiles/files/11557269802.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/e4tmkdsh7ap01smc9pvosn3rt5/1522499311.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/686edb2cd713c1d97fd4953d964e31f8/16151660332.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c912d9cbfed---vesux.pdfIn PDF document text
    • https://jxloanchien.com/style/postimage/file/kudagatudujunevopuzig.pdfIn PDF document text
    • http://wamer.org/userfiles/file/47414696254.pdfIn PDF document text
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/c89f803c7ea0fed39f787f1e232e8554/1085758014.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c88afeb231f---35677372405.pdfIn PDF document text
    • https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/5b53fd006bcaff9a48fcb7776d6f475e/91352007813.pdfIn PDF document text
    • http://aescantabria.es/upload/fckeditor/file///nuwagapoj.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/84b376eba004cb5ce32121bc603d1734/68436176802.pdfIn PDF document text
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/1d871a45ccf6914cea390c08d938f7bb/75896093402.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=home+design+caribbean+life+mod+apk+android+1PDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF194 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000109a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109A6 18600 bytes
SHA-256: e4194208ff6f2b8b9b2eecea42d0f2da2c2034cc314733df49e392dfd8c9ca29
font_02_sfnt_off000139a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139A1 11140 bytes
SHA-256: df5ffde70b30d20eafc2cc003fac59d408eaa6922f198ad9bbebfb281cf2e04e

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